# Heating, Ventilation And Air Conditioning Ultimate Trivia Quiz

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| By Nefertarylight55
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Quizzes Created: 15 | Total Attempts: 7,216
Questions: 26 | Attempts: 980

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• 1.

### Simultaneous control of the temperature, humidity, motion and purity of air in a confined space.

air-conditioning
air conditioning
Explanation
The given answer, "air-conditioning" and "air conditioning," refers to the process of controlling the temperature, humidity, motion, and purity of air in a confined space. This typically involves the use of mechanical systems, such as air conditioners or HVAC systems, to regulate and maintain a comfortable and healthy indoor environment.

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• 2.

### For summer cooling, temperatures of __________________ and _____% relative humidity are a frequent design average

• A.

20%

• B.

76 to 85 F

• C.

75 to 82 F

• D.

40%

• E.

50%

• F.

76 to 88F

• G.

76 to 80F

E. 50%
G. 76 to 80F
Explanation
In order to achieve summer cooling, it is common to design for temperatures between 76 to 80 degrees Fahrenheit and a relative humidity of 50%. This combination of temperature and humidity allows for a comfortable and cool environment during the summer months.

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• 3.

### For winter cooling temperatures of ______________________ with relative humidity of ________________ is found most satisfactory

• A.

75 to 80F

• B.

70 to 85%

• C.

30 to 35%

• D.

72 to 75F

• E.

15 to 30%

• F.

70 to 75F

• G.

35 to 40%

C. 30 to 35%
F. 70 to 75F
Explanation
In order to achieve the most satisfactory winter cooling temperatures, the relative humidity should be between 30 to 35% and the temperature should be between 70 to 75F. These specific ranges provide a balance of coolness and humidity that is comfortable for most people during the winter season.

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• 4.

### Air velocity should average ___________ measured ___________________ above the floor

• A.

15 to 25

• B.

32 degrees

• C.

36 degrees

• D.

15 to 27

• E.

15 to 30

• F.

31 degrees

A. 15 to 25
C. 36 degrees
Explanation
The correct answer is "15 to 25, 36 degrees". This means that the air velocity should average between 15 to 25 units, and the temperature should be 36 degrees. This indicates that there is a specific range of air velocity that is considered acceptable, and the temperature should be at a specific level for optimal conditions.

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• 5.

### _________ to 40 cuft of air per minute per person where smoking is permitted

• A.

7 and a half

• B.

5 and a half

• C.

25

• D.

30

C. 25
• 6.

### Passing air through coils containing the refrigerant itself. These coils are called ____________ coils.

direct expansion
Explanation
Passing air through coils containing the refrigerant itself is known as direct expansion. In this process, the refrigerant evaporates and absorbs heat from the air, cooling it down. The cooled air is then circulated into the space being cooled. Direct expansion is a common method used in air conditioning systems to provide efficient cooling.

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• 7.

### What does ACCU stand for

Air Conditioning Condensing Unit
Explanation
ACCU stands for Air Conditioning Condensing Unit. This term refers to the outdoor component of an air conditioning system that is responsible for releasing heat from the refrigerant and cooling it down. The condensing unit typically consists of a compressor, a condenser coil, and a fan. It plays a crucial role in the cooling process by transforming the high-pressure, high-temperature refrigerant vapor into a high-pressure liquid, which is then sent to the indoor evaporator coil for further cooling.

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• 8.

### What does FCU stand for?

Fan Coil Unit
Explanation
FCU stands for Fan Coil Unit. A Fan Coil Unit is a device that consists of a heating or cooling coil, a fan, and other components. It is used to control the temperature and airflow in a room or building. The fan coil unit draws in air from the room, passes it over the heating or cooling coil to adjust the temperature, and then circulates the conditioned air back into the room. FCUs are commonly used in HVAC systems to provide localized temperature control and are found in hotels, offices, and residential buildings.

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• 9.

### Coil for heating air that is below 32 degrees F to a temperature slightly above freezing.

• A.

Fan Coil Unit

• B.

Blower

• C.

Chiller

• D.

Preheater

D. Preheater
Explanation
A preheater is a device used to heat air that is below freezing temperature to a temperature slightly above freezing. It is commonly used in HVAC systems to warm up the incoming air before it is distributed to the desired space. In this scenario, a preheater would be the most suitable option as it specifically addresses the need to heat air that is below 32 degrees F to a temperature slightly above freezing. A fan coil unit, blower, and chiller are not designed for this specific purpose.

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• 10.

### Moveable Plate for regulating draft in an air outlet, air duct, the throat of a fireplace

• A.

Chiller

• B.

Damper

• C.

Preheater

• D.

Filter

B. Damper
Explanation
A damper is a movable plate that is used to regulate the draft in various applications such as air outlets, air ducts, and the throat of a fireplace. It can be adjusted to control the flow of air or gases, allowing for better control of temperature, pressure, and ventilation. In the context of the given question, a damper would be the appropriate choice for regulating the draft in an air outlet, air duct, or the throat of a fireplace.

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• 11.

### identify.

cassette type
cassette type air conditioner
cassette type ceiling mounted split type air conditioner
cassette type ceiling mounted split type
• 12.

### Porous substance or mass as cloth or layer of charcoal, through which a gas or liquid is passed to remove suspended impurities.

filter
Explanation
A filter is a porous substance or mass, such as cloth or a layer of charcoal, through which a gas or liquid is passed to remove suspended impurities. This process helps to separate the impurities from the desired substance, ensuring a cleaner and purer end product. Filters are commonly used in various industries and applications, such as water purification, air purification, and oil filtration. They play a crucial role in maintaining the quality and purity of different substances.

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• 13.

### AHU

Air Handling Unit
Explanation
An AHU, or Air Handling Unit, is a device that is used to circulate and condition air within a building. It is responsible for controlling the temperature, humidity, and air quality of the indoor environment. The AHU typically consists of a fan, heating or cooling coils, filters, and dampers. It is an essential component of HVAC systems and is commonly found in commercial buildings, hospitals, and industrial facilities. The AHU works by drawing in outside air, filtering and conditioning it, and then distributing it throughout the building via a network of ducts.

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• 14.

### Conditioned air delivered by an air conditioning system to the served spaces

• A.

Return air

• B.

Exhaust air

• C.

Supply air

• D.

Fresh air

C. Supply air
Explanation
Supply air refers to the conditioned air that is delivered by an air conditioning system to the served spaces. This air is typically cooled or heated to maintain a comfortable temperature and is distributed through vents or ducts. The supply air is responsible for providing a comfortable and controlled environment within the space being served by the air conditioning system.

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• 15.

### Machine that raises, transfers or compresses fluids or gases by the suction or pressure produced by a piston, plunger or set of rotating vanes

pump
Explanation
A pump is a machine that is used to raise, transfer, or compress fluids or gases. It achieves this by creating suction or pressure through the use of a piston, plunger, or set of rotating vanes.

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• 16.

### Fan for supplying air at a moderate pressure as to supply forced drafts in a heating or air-conditioned system.

blower
Explanation
A blower is a device that is used to supply air at a moderate pressure in order to provide forced drafts in a heating or air-conditioned system. It is commonly used in HVAC systems to circulate and distribute air throughout a space. Unlike a fan, which is typically used to create a breeze or provide ventilation, a blower is specifically designed to generate a higher pressure airflow.

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• 17.

### Room containing one or more chillers and pumps for air conditioning a building.

• A.

Mechanical equipment room

• B.

Cooling tower

• C.

Humidifier

• D.

Chilled water plant

D. Chilled water plant
Explanation
A chilled water plant is a room that houses one or more chillers and pumps used for air conditioning a building. Chillers are responsible for cooling water, which is then circulated through the building to provide cooling. The pumps help in circulating the chilled water throughout the building. This setup is commonly used in large buildings or facilities where a central cooling system is required. The term "chilled water plant" specifically refers to the room that houses this equipment.

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• 18.

### Pump or other machine reducing the volume and increasing the pressure of gas.

• A.

Compressor

• B.

Condenser

• C.

Compressive refrigeration

• D.

Nest

A. Compressor
Explanation
A compressor is a pump or machine that is used to decrease the volume of gas and increase its pressure. This process is essential in refrigeration systems as it allows the gas to be compressed and then cooled, which facilitates the removal of heat from the surroundings. The compressor plays a crucial role in the refrigeration cycle by compressing the refrigerant gas, raising its temperature and pressure, and enabling it to release heat in the condenser. Therefore, in this context, the correct answer is compressor.

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• 19.

### Fluid agent for reducing the temperature of a system below a specified valve by conducting away the head produced in the operation of a system.

coolant
Explanation
A coolant is a fluid agent used to reduce the temperature of a system below a specified valve by conducting away the heat produced during the operation of the system.

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• 20.

### Replacement of the volume of air contained within a room with an equivalent volume of fresh air.

• A.

Chimney effect

• B.

Air change

• C.

Cross ventilation

• D.

Mechanical ventilation

B. Air change
Explanation
Air change refers to the replacement of the volume of air contained within a room with an equivalent volume of fresh air. This process helps to remove stale air, odors, and pollutants from the room, improving indoor air quality. It can occur naturally through the chimney effect and cross ventilation, or it can be achieved through mechanical ventilation systems.

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• 21.

### Most common type of air conditioning unit.

• A.

Standing unit split type

• B.

Wall mounted

• C.

Ceiling mounted

• D.

Window type

D. Window type
Explanation
The correct answer is "window type." This is the most common type of air conditioning unit that is installed in a window or a hole in a wall. It is a self-contained unit that cools a single room and is relatively easy to install and maintain. Window type air conditioners are popular because they are cost-effective and do not require any major modifications to the structure of the building.

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• 22.

### A device for maintaining or increasing the amount of water vapor in the air of a room or a building.

humidifier
Explanation
A humidifier is a device that is used to increase the humidity or amount of water vapor in the air of a room or building. It works by releasing water vapor into the air, which helps to alleviate dryness and can provide relief for respiratory issues such as dry throat or nasal passages. Humidifiers are commonly used in dry climates or during the winter months when heating systems can cause the air to become dry. They can be beneficial for maintaining a comfortable and healthy indoor environment.

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• 23.

### Degree day above the standard temperature of 24 degrees C used in estimating energy requirements for air-conditioning and refrigeration.

• A.

Cooling day

• B.

• C.

Ton of refrigeration

• D.

Energy effieciency rating

A. Cooling day
Explanation
A cooling day refers to a day where the temperature is above the standard temperature of 24 degrees C, which is used as a benchmark for estimating energy requirements for air-conditioning and refrigeration. It indicates that cooling systems need to be activated to maintain a comfortable indoor temperature. Therefore, the term "cooling day" is the most appropriate answer in this context.

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• 24.

### Liquid capable of vaporizing at a low temperature, as ammonia, used in mechanical refrigeration.

• A.

Coolant

• B.

Absorber

• C.

Refrigerant

• D.

Condenser

C. Refrigerant
Explanation
A refrigerant is a liquid capable of vaporizing at a low temperature, such as ammonia, that is used in mechanical refrigeration systems. It absorbs heat from the surroundings and then releases it when it is compressed and condensed. This allows it to cool an area or object, making it an essential component in refrigeration systems.

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• 25.

### Index of the efficiency of a refrigerating unit, expressing the Btu removed per watt of electrical energy input

• A.

Cooling degree day

• B.

Energy efficiency rating

• C.

Ton or refrigeration

• D.

Heat sink

B. Energy efficiency rating
Explanation
The energy efficiency rating is a measure of the efficiency of a refrigerating unit. It expresses the amount of Btu removed per watt of electrical energy input. This rating helps consumers understand how efficiently a refrigerating unit can cool a space while minimizing energy consumption. A higher energy efficiency rating indicates a more efficient unit that can provide effective cooling while using less electricity.

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• 26.

### Draw the ff kinds of split-type air conditioners. Answers on page 219 of Building Construction Module 1. standing unit split type 2. wall mounted split type 3. ceiling mounted split type.

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• Current Version
• Mar 21, 2023
Quiz Edited by
ProProfs Editorial Team
• Sep 19, 2011
Quiz Created by
Nefertarylight55

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